great material for making picks!

by **hozer2k** » 11 Mar 2004 21:09

Thanks MadMick, that is exactly correct.

The scenario you described Jasey is because of the difference in ductility and strength. If you are in the elastic region (meaning no permanant deformation) the stiffness is the same. It is only after you exceed the elastic limit that it will behave differently.

And I assume if you are a decent lockpicker you will not plastically deform your picks during use...if you are then you are using too much force.

by **Chucklz** » 11 Mar 2004 22:13

Nothing is worse than exceding the elastic limit on your picks.

by **David_Parker** » 12 Mar 2004 15:08

Chucklz Posted: Fri Mar 12, 2004 11:13 am Post subject:

--------------------------------------------------------------------------------

Nothing is worse than exceding the elastic limit on your picks.

....thats what she said.

-Dave.

by **Dukemurmur** » 13 Mar 2004 1:04

Different steels do have different flex do to the different amounts of carbon and varying other elements in them. That is why they use different metal in golf clubs for this very reason and even the same metal under the most refined circumstance and procedures can be VERY different when it come to it's physical properties. They match them by flex and frequency by clamping them down and applying force and releasing it and counting and timing the number of flexes and the time it takes to stop. They then pair them to have a matching set. If u take a piece of high carbon steel it is MUCH harder then a piece of low carbon steel yet it is much more brittle. Where as the low carbon steel is much softer yet gives much more flex. And this is not through a process this is natural. Pb has much more flex then say Ti (lead and titanium) Mercury is a metal yet it is a liquid at room temp so that would have no flex to it.

by **hozer2k** » 14 Mar 2004 12:36

Sorry bud, but you are wrong and you confusing "flex" or modulus of elasticity with strength...you also threw in what is called damping in there as well. You are mixing several material properties together...you can look at many strength of materials or materials books to verify what I say. Or also look on the web, maybe www.matweb.com and look at all the steels you want. You will the modulus of elasticity is always ABOUT 30e6psi (this is the property that governs "flex"). It will vary depending on the allow alone (not treatment), but its not more than a few percent usually....certainly not enough for one to notice.

Trust me, I am a professional engineer with a few degrees doing just this type of work. I have 10 yrs of school and several as a working engineer.

The other problem is people look at brittle and ductile, etc and get confused. This has nothing to do with stiffness. However, it can give you the illusion of different stiffness because of the strength. Once again though, if you are in the elastic region they are the same (but different in the plastic region). As I stated earlier though, if you plastically deforming your pics you have other problems. All of your picking should be in the elastic region of the material, where all steels will behave the same.

by **hozer2k** » 14 Mar 2004 12:44

And if you still dont believe me....see if you can get your hands on MIL-HNDBK-5, its a great handbook by DOD that has properties of metallics. You will find that what I say is true.

by **Dukemurmur** » 14 Mar 2004 12:54

1. u can notice that few percent differnce in flex but it is very neligable
2. what u say is true my friend has that book and i just took a look at it.

ok, so u r right but ductility is the abilty of the metal to b pulled say into wire or what not malibilty is if it can be shaped or modled like Pb at room temps. by "flex do u mean the springyness of the steel of metal? or how much feed back u get from it? Also all of these things can be varyed greatly bvy a hardening or anulling process.

also one quick coment i can't spell for beans and it looks like u can't either. take a look at my posts and u will c that

by **Dukemurmur** » 14 Mar 2004 12:57

is there any way that u can edit ur posts i was just wonderiign as i catch things after i post and i can't find an edit button.

by **hozer2k** » 14 Mar 2004 13:18

Your posts are kind of scatter brained so I dont know what you want answered, but yes I mean "springyness" when I say "flex"...I am just using layman terms for the people on the board...I would normally say modulus.

Personally, I dont know how you could determine a few percent difference...I really doubt it though. If you could we should hire you to do some of our material testing as you might be more accurate.

As far as ductility, etc...I really dont know what that has to do with the topic of conversation or where you are going with it. I fail to see the relevance.

by **Dukemurmur** » 14 Mar 2004 13:23

some ppl where talking about it a while back in the post and i wasent sure if they knew what it ment.
And yes my posts are very scatter braind lol :oops:

As for the springyness part i myself cant fell it but some ppl can.

by **hozer2k** » 14 Mar 2004 13:55

PERHAPS you may be able to detect a difference of a couple percent, some steels vary more than that too...but not typically.

In general for the purpose of lockpicking, it is insignifcant and all steels will have the same amout of springyness.

by **Dukemurmur** » 14 Mar 2004 14:06

This is trues. Does Al also have the same springyness as say Ti or W?? (i'm going by symboll of elemnets her just so other know)

by **Dukemurmur** » 14 Mar 2004 14:11

wow, i need to start reading my posts!! b4 i post them lol. After i find way to amy goofs. :oops:

by **Mad Mick** » 14 Mar 2004 19:22

Click [Preview] before clicking [Submit].

by **Dukemurmur** » 14 Mar 2004 19:29

k i will remember that thanxs

great material for making picks!

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